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Dependencies:   BufferedSerial FatFileSystemCpp mbed

EthernetInterface/lwip/netif/ppp/auth.c@22:0dd9c1b5664a, 2021-07-05 (annotated)

Committer:
AndyA
Date:
Mon Jul 05 15:30:14 2021 +0000
Revision:
22:0dd9c1b5664a
First pass at adding UDP FreeD output

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AndyA 22:0dd9c1b5664a 1 /*****************************************************************************
AndyA 22:0dd9c1b5664a 2 * auth.c - Network Authentication and Phase Control program file.
AndyA 22:0dd9c1b5664a 3 *
AndyA 22:0dd9c1b5664a 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
AndyA 22:0dd9c1b5664a 5 * Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
AndyA 22:0dd9c1b5664a 6 *
AndyA 22:0dd9c1b5664a 7 * The authors hereby grant permission to use, copy, modify, distribute,
AndyA 22:0dd9c1b5664a 8 * and license this software and its documentation for any purpose, provided
AndyA 22:0dd9c1b5664a 9 * that existing copyright notices are retained in all copies and that this
AndyA 22:0dd9c1b5664a 10 * notice and the following disclaimer are included verbatim in any
AndyA 22:0dd9c1b5664a 11 * distributions. No written agreement, license, or royalty fee is required
AndyA 22:0dd9c1b5664a 12 * for any of the authorized uses.
AndyA 22:0dd9c1b5664a 13 *
AndyA 22:0dd9c1b5664a 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
AndyA 22:0dd9c1b5664a 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
AndyA 22:0dd9c1b5664a 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
AndyA 22:0dd9c1b5664a 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
AndyA 22:0dd9c1b5664a 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
AndyA 22:0dd9c1b5664a 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
AndyA 22:0dd9c1b5664a 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
AndyA 22:0dd9c1b5664a 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
AndyA 22:0dd9c1b5664a 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
AndyA 22:0dd9c1b5664a 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AndyA 22:0dd9c1b5664a 24 *
AndyA 22:0dd9c1b5664a 25 ******************************************************************************
AndyA 22:0dd9c1b5664a 26 * REVISION HISTORY
AndyA 22:0dd9c1b5664a 27 *
AndyA 22:0dd9c1b5664a 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
AndyA 22:0dd9c1b5664a 29 * Ported to lwIP.
AndyA 22:0dd9c1b5664a 30 * 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
AndyA 22:0dd9c1b5664a 31 * Ported from public pppd code.
AndyA 22:0dd9c1b5664a 32 *****************************************************************************/
AndyA 22:0dd9c1b5664a 33 /*
AndyA 22:0dd9c1b5664a 34 * auth.c - PPP authentication and phase control.
AndyA 22:0dd9c1b5664a 35 *
AndyA 22:0dd9c1b5664a 36 * Copyright (c) 1993 The Australian National University.
AndyA 22:0dd9c1b5664a 37 * All rights reserved.
AndyA 22:0dd9c1b5664a 38 *
AndyA 22:0dd9c1b5664a 39 * Redistribution and use in source and binary forms are permitted
AndyA 22:0dd9c1b5664a 40 * provided that the above copyright notice and this paragraph are
AndyA 22:0dd9c1b5664a 41 * duplicated in all such forms and that any documentation,
AndyA 22:0dd9c1b5664a 42 * advertising materials, and other materials related to such
AndyA 22:0dd9c1b5664a 43 * distribution and use acknowledge that the software was developed
AndyA 22:0dd9c1b5664a 44 * by the Australian National University. The name of the University
AndyA 22:0dd9c1b5664a 45 * may not be used to endorse or promote products derived from this
AndyA 22:0dd9c1b5664a 46 * software without specific prior written permission.
AndyA 22:0dd9c1b5664a 47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
AndyA 22:0dd9c1b5664a 48 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
AndyA 22:0dd9c1b5664a 49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
AndyA 22:0dd9c1b5664a 50 *
AndyA 22:0dd9c1b5664a 51 * Copyright (c) 1989 Carnegie Mellon University.
AndyA 22:0dd9c1b5664a 52 * All rights reserved.
AndyA 22:0dd9c1b5664a 53 *
AndyA 22:0dd9c1b5664a 54 * Redistribution and use in source and binary forms are permitted
AndyA 22:0dd9c1b5664a 55 * provided that the above copyright notice and this paragraph are
AndyA 22:0dd9c1b5664a 56 * duplicated in all such forms and that any documentation,
AndyA 22:0dd9c1b5664a 57 * advertising materials, and other materials related to such
AndyA 22:0dd9c1b5664a 58 * distribution and use acknowledge that the software was developed
AndyA 22:0dd9c1b5664a 59 * by Carnegie Mellon University. The name of the
AndyA 22:0dd9c1b5664a 60 * University may not be used to endorse or promote products derived
AndyA 22:0dd9c1b5664a 61 * from this software without specific prior written permission.
AndyA 22:0dd9c1b5664a 62 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
AndyA 22:0dd9c1b5664a 63 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
AndyA 22:0dd9c1b5664a 64 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
AndyA 22:0dd9c1b5664a 65 */
AndyA 22:0dd9c1b5664a 66
AndyA 22:0dd9c1b5664a 67 #include "lwip/opt.h"
AndyA 22:0dd9c1b5664a 68
AndyA 22:0dd9c1b5664a 69 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
AndyA 22:0dd9c1b5664a 70
AndyA 22:0dd9c1b5664a 71 #include "ppp.h"
AndyA 22:0dd9c1b5664a 72 #include "pppdebug.h"
AndyA 22:0dd9c1b5664a 73
AndyA 22:0dd9c1b5664a 74 #include "fsm.h"
AndyA 22:0dd9c1b5664a 75 #include "lcp.h"
AndyA 22:0dd9c1b5664a 76 #include "pap.h"
AndyA 22:0dd9c1b5664a 77 #include "chap.h"
AndyA 22:0dd9c1b5664a 78 #include "auth.h"
AndyA 22:0dd9c1b5664a 79 #include "ipcp.h"
AndyA 22:0dd9c1b5664a 80
AndyA 22:0dd9c1b5664a 81 #if CBCP_SUPPORT
AndyA 22:0dd9c1b5664a 82 #include "cbcp.h"
AndyA 22:0dd9c1b5664a 83 #endif /* CBCP_SUPPORT */
AndyA 22:0dd9c1b5664a 84
AndyA 22:0dd9c1b5664a 85 #include "lwip/inet.h"
AndyA 22:0dd9c1b5664a 86
AndyA 22:0dd9c1b5664a 87 #include <string.h>
AndyA 22:0dd9c1b5664a 88
AndyA 22:0dd9c1b5664a 89 #if 0 /* UNUSED */
AndyA 22:0dd9c1b5664a 90 /* Bits in scan_authfile return value */
AndyA 22:0dd9c1b5664a 91 #define NONWILD_SERVER 1
AndyA 22:0dd9c1b5664a 92 #define NONWILD_CLIENT 2
AndyA 22:0dd9c1b5664a 93
AndyA 22:0dd9c1b5664a 94 #define ISWILD(word) (word[0] == '*' && word[1] == 0)
AndyA 22:0dd9c1b5664a 95 #endif /* UNUSED */
AndyA 22:0dd9c1b5664a 96
AndyA 22:0dd9c1b5664a 97 #if PAP_SUPPORT || CHAP_SUPPORT
AndyA 22:0dd9c1b5664a 98 /* The name by which the peer authenticated itself to us. */
AndyA 22:0dd9c1b5664a 99 static char peer_authname[MAXNAMELEN];
AndyA 22:0dd9c1b5664a 100 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
AndyA 22:0dd9c1b5664a 101
AndyA 22:0dd9c1b5664a 102 /* Records which authentication operations haven't completed yet. */
AndyA 22:0dd9c1b5664a 103 static int auth_pending[NUM_PPP];
AndyA 22:0dd9c1b5664a 104
AndyA 22:0dd9c1b5664a 105 /* Set if we have successfully called plogin() */
AndyA 22:0dd9c1b5664a 106 static int logged_in;
AndyA 22:0dd9c1b5664a 107
AndyA 22:0dd9c1b5664a 108 /* Set if we have run the /etc/ppp/auth-up script. */
AndyA 22:0dd9c1b5664a 109 static int did_authup; /* @todo, we don't need this in lwip*/
AndyA 22:0dd9c1b5664a 110
AndyA 22:0dd9c1b5664a 111 /* List of addresses which the peer may use. */
AndyA 22:0dd9c1b5664a 112 static struct wordlist *addresses[NUM_PPP];
AndyA 22:0dd9c1b5664a 113
AndyA 22:0dd9c1b5664a 114 #if 0 /* UNUSED */
AndyA 22:0dd9c1b5664a 115 /* Wordlist giving addresses which the peer may use
AndyA 22:0dd9c1b5664a 116 without authenticating itself. */
AndyA 22:0dd9c1b5664a 117 static struct wordlist *noauth_addrs;
AndyA 22:0dd9c1b5664a 118
AndyA 22:0dd9c1b5664a 119 /* Extra options to apply, from the secrets file entry for the peer. */
AndyA 22:0dd9c1b5664a 120 static struct wordlist *extra_options;
AndyA 22:0dd9c1b5664a 121 #endif /* UNUSED */
AndyA 22:0dd9c1b5664a 122
AndyA 22:0dd9c1b5664a 123 /* Number of network protocols which we have opened. */
AndyA 22:0dd9c1b5664a 124 static int num_np_open;
AndyA 22:0dd9c1b5664a 125
AndyA 22:0dd9c1b5664a 126 /* Number of network protocols which have come up. */
AndyA 22:0dd9c1b5664a 127 static int num_np_up;
AndyA 22:0dd9c1b5664a 128
AndyA 22:0dd9c1b5664a 129 #if PAP_SUPPORT || CHAP_SUPPORT
AndyA 22:0dd9c1b5664a 130 /* Set if we got the contents of passwd[] from the pap-secrets file. */
AndyA 22:0dd9c1b5664a 131 static int passwd_from_file;
AndyA 22:0dd9c1b5664a 132 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
AndyA 22:0dd9c1b5664a 133
AndyA 22:0dd9c1b5664a 134 #if 0 /* UNUSED */
AndyA 22:0dd9c1b5664a 135 /* Set if we require authentication only because we have a default route. */
AndyA 22:0dd9c1b5664a 136 static bool default_auth;
AndyA 22:0dd9c1b5664a 137
AndyA 22:0dd9c1b5664a 138 /* Hook to enable a plugin to control the idle time limit */
AndyA 22:0dd9c1b5664a 139 int (*idle_time_hook) __P((struct ppp_idle *)) = NULL;
AndyA 22:0dd9c1b5664a 140
AndyA 22:0dd9c1b5664a 141 /* Hook for a plugin to say whether we can possibly authenticate any peer */
AndyA 22:0dd9c1b5664a 142 int (*pap_check_hook) __P((void)) = NULL;
AndyA 22:0dd9c1b5664a 143
AndyA 22:0dd9c1b5664a 144 /* Hook for a plugin to check the PAP user and password */
AndyA 22:0dd9c1b5664a 145 int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp,
AndyA 22:0dd9c1b5664a 146 struct wordlist **paddrs,
AndyA 22:0dd9c1b5664a 147 struct wordlist **popts)) = NULL;
AndyA 22:0dd9c1b5664a 148
AndyA 22:0dd9c1b5664a 149 /* Hook for a plugin to know about the PAP user logout */
AndyA 22:0dd9c1b5664a 150 void (*pap_logout_hook) __P((void)) = NULL;
AndyA 22:0dd9c1b5664a 151
AndyA 22:0dd9c1b5664a 152 /* Hook for a plugin to get the PAP password for authenticating us */
AndyA 22:0dd9c1b5664a 153 int (*pap_passwd_hook) __P((char *user, char *passwd)) = NULL;
AndyA 22:0dd9c1b5664a 154
AndyA 22:0dd9c1b5664a 155 /*
AndyA 22:0dd9c1b5664a 156 * This is used to ensure that we don't start an auth-up/down
AndyA 22:0dd9c1b5664a 157 * script while one is already running.
AndyA 22:0dd9c1b5664a 158 */
AndyA 22:0dd9c1b5664a 159 enum script_state {
AndyA 22:0dd9c1b5664a 160 s_down,
AndyA 22:0dd9c1b5664a 161 s_up
AndyA 22:0dd9c1b5664a 162 };
AndyA 22:0dd9c1b5664a 163
AndyA 22:0dd9c1b5664a 164 static enum script_state auth_state = s_down;
AndyA 22:0dd9c1b5664a 165 static enum script_state auth_script_state = s_down;
AndyA 22:0dd9c1b5664a 166 static pid_t auth_script_pid = 0;
AndyA 22:0dd9c1b5664a 167
AndyA 22:0dd9c1b5664a 168 /*
AndyA 22:0dd9c1b5664a 169 * Option variables.
AndyA 22:0dd9c1b5664a 170 * lwip: some of these are present in the ppp_settings structure
AndyA 22:0dd9c1b5664a 171 */
AndyA 22:0dd9c1b5664a 172 bool uselogin = 0; /* Use /etc/passwd for checking PAP */
AndyA 22:0dd9c1b5664a 173 bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */
AndyA 22:0dd9c1b5664a 174 bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */
AndyA 22:0dd9c1b5664a 175 bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */
AndyA 22:0dd9c1b5664a 176 bool usehostname = 0; /* Use hostname for our_name */
AndyA 22:0dd9c1b5664a 177 bool auth_required = 0; /* Always require authentication from peer */
AndyA 22:0dd9c1b5664a 178 bool allow_any_ip = 0; /* Allow peer to use any IP address */
AndyA 22:0dd9c1b5664a 179 bool explicit_remote = 0; /* User specified explicit remote name */
AndyA 22:0dd9c1b5664a 180 char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
AndyA 22:0dd9c1b5664a 181
AndyA 22:0dd9c1b5664a 182 #endif /* UNUSED */
AndyA 22:0dd9c1b5664a 183
AndyA 22:0dd9c1b5664a 184 /* Bits in auth_pending[] */
AndyA 22:0dd9c1b5664a 185 #define PAP_WITHPEER 1
AndyA 22:0dd9c1b5664a 186 #define PAP_PEER 2
AndyA 22:0dd9c1b5664a 187 #define CHAP_WITHPEER 4
AndyA 22:0dd9c1b5664a 188 #define CHAP_PEER 8
AndyA 22:0dd9c1b5664a 189
AndyA 22:0dd9c1b5664a 190 /* @todo, move this somewhere */
AndyA 22:0dd9c1b5664a 191 /* Used for storing a sequence of words. Usually malloced. */
AndyA 22:0dd9c1b5664a 192 struct wordlist {
AndyA 22:0dd9c1b5664a 193 struct wordlist *next;
AndyA 22:0dd9c1b5664a 194 char word[1];
AndyA 22:0dd9c1b5664a 195 };
AndyA 22:0dd9c1b5664a 196
AndyA 22:0dd9c1b5664a 197
AndyA 22:0dd9c1b5664a 198 extern char *crypt (const char *, const char *);
AndyA 22:0dd9c1b5664a 199
AndyA 22:0dd9c1b5664a 200 /* Prototypes for procedures local to this file. */
AndyA 22:0dd9c1b5664a 201
AndyA 22:0dd9c1b5664a 202 static void network_phase (int);
AndyA 22:0dd9c1b5664a 203 static void check_idle (void *);
AndyA 22:0dd9c1b5664a 204 static void connect_time_expired (void *);
AndyA 22:0dd9c1b5664a 205 #if 0
AndyA 22:0dd9c1b5664a 206 static int plogin (char *, char *, char **, int *);
AndyA 22:0dd9c1b5664a 207 #endif
AndyA 22:0dd9c1b5664a 208 static void plogout (void);
AndyA 22:0dd9c1b5664a 209 static int null_login (int);
AndyA 22:0dd9c1b5664a 210 static int get_pap_passwd (int, char *, char *);
AndyA 22:0dd9c1b5664a 211 static int have_pap_secret (void);
AndyA 22:0dd9c1b5664a 212 static int have_chap_secret (char *, char *, u32_t);
AndyA 22:0dd9c1b5664a 213 static int ip_addr_check (u32_t, struct wordlist *);
AndyA 22:0dd9c1b5664a 214
AndyA 22:0dd9c1b5664a 215 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
AndyA 22:0dd9c1b5664a 216 static int scan_authfile (FILE *, char *, char *, char *,
AndyA 22:0dd9c1b5664a 217 struct wordlist **, struct wordlist **,
AndyA 22:0dd9c1b5664a 218 char *);
AndyA 22:0dd9c1b5664a 219 static void free_wordlist (struct wordlist *);
AndyA 22:0dd9c1b5664a 220 static void auth_script (char *);
AndyA 22:0dd9c1b5664a 221 static void auth_script_done (void *);
AndyA 22:0dd9c1b5664a 222 static void set_allowed_addrs (int unit, struct wordlist *addrs);
AndyA 22:0dd9c1b5664a 223 static int some_ip_ok (struct wordlist *);
AndyA 22:0dd9c1b5664a 224 static int setupapfile (char **);
AndyA 22:0dd9c1b5664a 225 static int privgroup (char **);
AndyA 22:0dd9c1b5664a 226 static int set_noauth_addr (char **);
AndyA 22:0dd9c1b5664a 227 static void check_access (FILE *, char *);
AndyA 22:0dd9c1b5664a 228 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
AndyA 22:0dd9c1b5664a 229
AndyA 22:0dd9c1b5664a 230 #if 0 /* UNUSED */
AndyA 22:0dd9c1b5664a 231 /*
AndyA 22:0dd9c1b5664a 232 * Authentication-related options.
AndyA 22:0dd9c1b5664a 233 */
AndyA 22:0dd9c1b5664a 234 option_t auth_options[] = {
AndyA 22:0dd9c1b5664a 235 { "require-pap", o_bool, &lcp_wantoptions[0].neg_upap,
AndyA 22:0dd9c1b5664a 236 "Require PAP authentication from peer", 1, &auth_required },
AndyA 22:0dd9c1b5664a 237 { "+pap", o_bool, &lcp_wantoptions[0].neg_upap,
AndyA 22:0dd9c1b5664a 238 "Require PAP authentication from peer", 1, &auth_required },
AndyA 22:0dd9c1b5664a 239 { "refuse-pap", o_bool, &refuse_pap,
AndyA 22:0dd9c1b5664a 240 "Don't agree to auth to peer with PAP", 1 },
AndyA 22:0dd9c1b5664a 241 { "-pap", o_bool, &refuse_pap,
AndyA 22:0dd9c1b5664a 242 "Don't allow PAP authentication with peer", 1 },
AndyA 22:0dd9c1b5664a 243 { "require-chap", o_bool, &lcp_wantoptions[0].neg_chap,
AndyA 22:0dd9c1b5664a 244 "Require CHAP authentication from peer", 1, &auth_required },
AndyA 22:0dd9c1b5664a 245 { "+chap", o_bool, &lcp_wantoptions[0].neg_chap,
AndyA 22:0dd9c1b5664a 246 "Require CHAP authentication from peer", 1, &auth_required },
AndyA 22:0dd9c1b5664a 247 { "refuse-chap", o_bool, &refuse_chap,
AndyA 22:0dd9c1b5664a 248 "Don't agree to auth to peer with CHAP", 1 },
AndyA 22:0dd9c1b5664a 249 { "-chap", o_bool, &refuse_chap,
AndyA 22:0dd9c1b5664a 250 "Don't allow CHAP authentication with peer", 1 },
AndyA 22:0dd9c1b5664a 251 { "name", o_string, our_name,
AndyA 22:0dd9c1b5664a 252 "Set local name for authentication",
AndyA 22:0dd9c1b5664a 253 OPT_PRIV|OPT_STATIC, NULL, MAXNAMELEN },
AndyA 22:0dd9c1b5664a 254 { "user", o_string, user,
AndyA 22:0dd9c1b5664a 255 "Set name for auth with peer", OPT_STATIC, NULL, MAXNAMELEN },
AndyA 22:0dd9c1b5664a 256 { "usehostname", o_bool, &usehostname,
AndyA 22:0dd9c1b5664a 257 "Must use hostname for authentication", 1 },
AndyA 22:0dd9c1b5664a 258 { "remotename", o_string, remote_name,
AndyA 22:0dd9c1b5664a 259 "Set remote name for authentication", OPT_STATIC,
AndyA 22:0dd9c1b5664a 260 &explicit_remote, MAXNAMELEN },
AndyA 22:0dd9c1b5664a 261 { "auth", o_bool, &auth_required,
AndyA 22:0dd9c1b5664a 262 "Require authentication from peer", 1 },
AndyA 22:0dd9c1b5664a 263 { "noauth", o_bool, &auth_required,
AndyA 22:0dd9c1b5664a 264 "Don't require peer to authenticate", OPT_PRIV, &allow_any_ip },
AndyA 22:0dd9c1b5664a 265 { "login", o_bool, &uselogin,
AndyA 22:0dd9c1b5664a 266 "Use system password database for PAP", 1 },
AndyA 22:0dd9c1b5664a 267 { "papcrypt", o_bool, &cryptpap,
AndyA 22:0dd9c1b5664a 268 "PAP passwords are encrypted", 1 },
AndyA 22:0dd9c1b5664a 269 { "+ua", o_special, (void *)setupapfile,
AndyA 22:0dd9c1b5664a 270 "Get PAP user and password from file" },
AndyA 22:0dd9c1b5664a 271 { "password", o_string, passwd,
AndyA 22:0dd9c1b5664a 272 "Password for authenticating us to the peer", OPT_STATIC,
AndyA 22:0dd9c1b5664a 273 NULL, MAXSECRETLEN },
AndyA 22:0dd9c1b5664a 274 { "privgroup", o_special, (void *)privgroup,
AndyA 22:0dd9c1b5664a 275 "Allow group members to use privileged options", OPT_PRIV },
AndyA 22:0dd9c1b5664a 276 { "allow-ip", o_special, (void *)set_noauth_addr,
AndyA 22:0dd9c1b5664a 277 "Set IP address(es) which can be used without authentication",
AndyA 22:0dd9c1b5664a 278 OPT_PRIV },
AndyA 22:0dd9c1b5664a 279 { NULL }
AndyA 22:0dd9c1b5664a 280 };
AndyA 22:0dd9c1b5664a 281 #endif /* UNUSED */
AndyA 22:0dd9c1b5664a 282 #if 0 /* UNUSED */
AndyA 22:0dd9c1b5664a 283 /*
AndyA 22:0dd9c1b5664a 284 * setupapfile - specifies UPAP info for authenticating with peer.
AndyA 22:0dd9c1b5664a 285 */
AndyA 22:0dd9c1b5664a 286 static int
AndyA 22:0dd9c1b5664a 287 setupapfile(char **argv)
AndyA 22:0dd9c1b5664a 288 {
AndyA 22:0dd9c1b5664a 289 FILE * ufile;
AndyA 22:0dd9c1b5664a 290 int l;
AndyA 22:0dd9c1b5664a 291
AndyA 22:0dd9c1b5664a 292 lcp_allowoptions[0].neg_upap = 1;
AndyA 22:0dd9c1b5664a 293
AndyA 22:0dd9c1b5664a 294 /* open user info file */
AndyA 22:0dd9c1b5664a 295 seteuid(getuid());
AndyA 22:0dd9c1b5664a 296 ufile = fopen(*argv, "r");
AndyA 22:0dd9c1b5664a 297 seteuid(0);
AndyA 22:0dd9c1b5664a 298 if (ufile == NULL) {
AndyA 22:0dd9c1b5664a 299 option_error("unable to open user login data file %s", *argv);
AndyA 22:0dd9c1b5664a 300 return 0;
AndyA 22:0dd9c1b5664a 301 }
AndyA 22:0dd9c1b5664a 302 check_access(ufile, *argv);
AndyA 22:0dd9c1b5664a 303
AndyA 22:0dd9c1b5664a 304 /* get username */
AndyA 22:0dd9c1b5664a 305 if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
AndyA 22:0dd9c1b5664a 306 || fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
AndyA 22:0dd9c1b5664a 307 option_error("unable to read user login data file %s", *argv);
AndyA 22:0dd9c1b5664a 308 return 0;
AndyA 22:0dd9c1b5664a 309 }
AndyA 22:0dd9c1b5664a 310 fclose(ufile);
AndyA 22:0dd9c1b5664a 311
AndyA 22:0dd9c1b5664a 312 /* get rid of newlines */
AndyA 22:0dd9c1b5664a 313 l = strlen(user);
AndyA 22:0dd9c1b5664a 314 if (l > 0 && user[l-1] == '\n')
AndyA 22:0dd9c1b5664a 315 user[l-1] = 0;
AndyA 22:0dd9c1b5664a 316 l = strlen(passwd);
AndyA 22:0dd9c1b5664a 317 if (l > 0 && passwd[l-1] == '\n')
AndyA 22:0dd9c1b5664a 318 passwd[l-1] = 0;
AndyA 22:0dd9c1b5664a 319
AndyA 22:0dd9c1b5664a 320 return (1);
AndyA 22:0dd9c1b5664a 321 }
AndyA 22:0dd9c1b5664a 322 #endif /* UNUSED */
AndyA 22:0dd9c1b5664a 323
AndyA 22:0dd9c1b5664a 324 #if 0 /* UNUSED */
AndyA 22:0dd9c1b5664a 325 /*
AndyA 22:0dd9c1b5664a 326 * privgroup - allow members of the group to have privileged access.
AndyA 22:0dd9c1b5664a 327 */
AndyA 22:0dd9c1b5664a 328 static int
AndyA 22:0dd9c1b5664a 329 privgroup(char **argv)
AndyA 22:0dd9c1b5664a 330 {
AndyA 22:0dd9c1b5664a 331 struct group *g;
AndyA 22:0dd9c1b5664a 332 int i;
AndyA 22:0dd9c1b5664a 333
AndyA 22:0dd9c1b5664a 334 g = getgrnam(*argv);
AndyA 22:0dd9c1b5664a 335 if (g == 0) {
AndyA 22:0dd9c1b5664a 336 option_error("group %s is unknown", *argv);
AndyA 22:0dd9c1b5664a 337 return 0;
AndyA 22:0dd9c1b5664a 338 }
AndyA 22:0dd9c1b5664a 339 for (i = 0; i < ngroups; ++i) {
AndyA 22:0dd9c1b5664a 340 if (groups[i] == g->gr_gid) {
AndyA 22:0dd9c1b5664a 341 privileged = 1;
AndyA 22:0dd9c1b5664a 342 break;
AndyA 22:0dd9c1b5664a 343 }
AndyA 22:0dd9c1b5664a 344 }
AndyA 22:0dd9c1b5664a 345 return 1;
AndyA 22:0dd9c1b5664a 346 }
AndyA 22:0dd9c1b5664a 347 #endif
AndyA 22:0dd9c1b5664a 348
AndyA 22:0dd9c1b5664a 349 #if 0 /* UNUSED */
AndyA 22:0dd9c1b5664a 350 /*
AndyA 22:0dd9c1b5664a 351 * set_noauth_addr - set address(es) that can be used without authentication.
AndyA 22:0dd9c1b5664a 352 * Equivalent to specifying an entry like `"" * "" addr' in pap-secrets.
AndyA 22:0dd9c1b5664a 353 */
AndyA 22:0dd9c1b5664a 354 static int
AndyA 22:0dd9c1b5664a 355 set_noauth_addr(char **argv)
AndyA 22:0dd9c1b5664a 356 {
AndyA 22:0dd9c1b5664a 357 char *addr = *argv;
AndyA 22:0dd9c1b5664a 358 int l = strlen(addr);
AndyA 22:0dd9c1b5664a 359 struct wordlist *wp;
AndyA 22:0dd9c1b5664a 360
AndyA 22:0dd9c1b5664a 361 wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l + 1);
AndyA 22:0dd9c1b5664a 362 if (wp == NULL)
AndyA 22:0dd9c1b5664a 363 novm("allow-ip argument");
AndyA 22:0dd9c1b5664a 364 wp->word = (char *) (wp + 1);
AndyA 22:0dd9c1b5664a 365 wp->next = noauth_addrs;
AndyA 22:0dd9c1b5664a 366 BCOPY(addr, wp->word, l);
AndyA 22:0dd9c1b5664a 367 noauth_addrs = wp;
AndyA 22:0dd9c1b5664a 368 return 1;
AndyA 22:0dd9c1b5664a 369 }
AndyA 22:0dd9c1b5664a 370 #endif /* UNUSED */
AndyA 22:0dd9c1b5664a 371
AndyA 22:0dd9c1b5664a 372 /*
AndyA 22:0dd9c1b5664a 373 * An Open on LCP has requested a change from Dead to Establish phase.
AndyA 22:0dd9c1b5664a 374 * Do what's necessary to bring the physical layer up.
AndyA 22:0dd9c1b5664a 375 */
AndyA 22:0dd9c1b5664a 376 void
AndyA 22:0dd9c1b5664a 377 link_required(int unit)
AndyA 22:0dd9c1b5664a 378 {
AndyA 22:0dd9c1b5664a 379 LWIP_UNUSED_ARG(unit);
AndyA 22:0dd9c1b5664a 380
AndyA 22:0dd9c1b5664a 381 AUTHDEBUG(LOG_INFO, ("link_required: %d\n", unit));
AndyA 22:0dd9c1b5664a 382 }
AndyA 22:0dd9c1b5664a 383
AndyA 22:0dd9c1b5664a 384 /*
AndyA 22:0dd9c1b5664a 385 * LCP has terminated the link; go to the Dead phase and take the
AndyA 22:0dd9c1b5664a 386 * physical layer down.
AndyA 22:0dd9c1b5664a 387 */
AndyA 22:0dd9c1b5664a 388 void
AndyA 22:0dd9c1b5664a 389 link_terminated(int unit)
AndyA 22:0dd9c1b5664a 390 {
AndyA 22:0dd9c1b5664a 391 AUTHDEBUG(LOG_INFO, ("link_terminated: %d\n", unit));
AndyA 22:0dd9c1b5664a 392 if (lcp_phase[unit] == PHASE_DEAD) {
AndyA 22:0dd9c1b5664a 393 return;
AndyA 22:0dd9c1b5664a 394 }
AndyA 22:0dd9c1b5664a 395 if (logged_in) {
AndyA 22:0dd9c1b5664a 396 plogout();
AndyA 22:0dd9c1b5664a 397 }
AndyA 22:0dd9c1b5664a 398 lcp_phase[unit] = PHASE_DEAD;
AndyA 22:0dd9c1b5664a 399 AUTHDEBUG(LOG_NOTICE, ("Connection terminated.\n"));
AndyA 22:0dd9c1b5664a 400 pppLinkTerminated(unit);
AndyA 22:0dd9c1b5664a 401 }
AndyA 22:0dd9c1b5664a 402
AndyA 22:0dd9c1b5664a 403 /*
AndyA 22:0dd9c1b5664a 404 * LCP has gone down; it will either die or try to re-establish.
AndyA 22:0dd9c1b5664a 405 */
AndyA 22:0dd9c1b5664a 406 void
AndyA 22:0dd9c1b5664a 407 link_down(int unit)
AndyA 22:0dd9c1b5664a 408 {
AndyA 22:0dd9c1b5664a 409 int i;
AndyA 22:0dd9c1b5664a 410 struct protent *protp;
AndyA 22:0dd9c1b5664a 411
AndyA 22:0dd9c1b5664a 412 AUTHDEBUG(LOG_INFO, ("link_down: %d\n", unit));
AndyA 22:0dd9c1b5664a 413
AndyA 22:0dd9c1b5664a 414 if (did_authup) {
AndyA 22:0dd9c1b5664a 415 /* XXX Do link down processing. */
AndyA 22:0dd9c1b5664a 416 did_authup = 0;
AndyA 22:0dd9c1b5664a 417 }
AndyA 22:0dd9c1b5664a 418 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
AndyA 22:0dd9c1b5664a 419 if (!protp->enabled_flag) {
AndyA 22:0dd9c1b5664a 420 continue;
AndyA 22:0dd9c1b5664a 421 }
AndyA 22:0dd9c1b5664a 422 if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) {
AndyA 22:0dd9c1b5664a 423 (*protp->lowerdown)(unit);
AndyA 22:0dd9c1b5664a 424 }
AndyA 22:0dd9c1b5664a 425 if (protp->protocol < 0xC000 && protp->close != NULL) {
AndyA 22:0dd9c1b5664a 426 (*protp->close)(unit, "LCP down");
AndyA 22:0dd9c1b5664a 427 }
AndyA 22:0dd9c1b5664a 428 }
AndyA 22:0dd9c1b5664a 429 num_np_open = 0; /* number of network protocols we have opened */
AndyA 22:0dd9c1b5664a 430 num_np_up = 0; /* Number of network protocols which have come up */
AndyA 22:0dd9c1b5664a 431
AndyA 22:0dd9c1b5664a 432 if (lcp_phase[unit] != PHASE_DEAD) {
AndyA 22:0dd9c1b5664a 433 lcp_phase[unit] = PHASE_TERMINATE;
AndyA 22:0dd9c1b5664a 434 }
AndyA 22:0dd9c1b5664a 435 pppLinkDown(unit);
AndyA 22:0dd9c1b5664a 436 }
AndyA 22:0dd9c1b5664a 437
AndyA 22:0dd9c1b5664a 438 /*
AndyA 22:0dd9c1b5664a 439 * The link is established.
AndyA 22:0dd9c1b5664a 440 * Proceed to the Dead, Authenticate or Network phase as appropriate.
AndyA 22:0dd9c1b5664a 441 */
AndyA 22:0dd9c1b5664a 442 void
AndyA 22:0dd9c1b5664a 443 link_established(int unit)
AndyA 22:0dd9c1b5664a 444 {
AndyA 22:0dd9c1b5664a 445 int auth;
AndyA 22:0dd9c1b5664a 446 int i;
AndyA 22:0dd9c1b5664a 447 struct protent *protp;
AndyA 22:0dd9c1b5664a 448 lcp_options *wo = &lcp_wantoptions[unit];
AndyA 22:0dd9c1b5664a 449 lcp_options *go = &lcp_gotoptions[unit];
AndyA 22:0dd9c1b5664a 450 #if PAP_SUPPORT || CHAP_SUPPORT
AndyA 22:0dd9c1b5664a 451 lcp_options *ho = &lcp_hisoptions[unit];
AndyA 22:0dd9c1b5664a 452 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
AndyA 22:0dd9c1b5664a 453
AndyA 22:0dd9c1b5664a 454 AUTHDEBUG(LOG_INFO, ("link_established: unit %d; Lowering up all protocols...\n", unit));
AndyA 22:0dd9c1b5664a 455 /*
AndyA 22:0dd9c1b5664a 456 * Tell higher-level protocols that LCP is up.
AndyA 22:0dd9c1b5664a 457 */
AndyA 22:0dd9c1b5664a 458 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
AndyA 22:0dd9c1b5664a 459 if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL) {
AndyA 22:0dd9c1b5664a 460 (*protp->lowerup)(unit);
AndyA 22:0dd9c1b5664a 461 }
AndyA 22:0dd9c1b5664a 462 }
AndyA 22:0dd9c1b5664a 463 if (ppp_settings.auth_required && !(go->neg_chap || go->neg_upap)) {
AndyA 22:0dd9c1b5664a 464 /*
AndyA 22:0dd9c1b5664a 465 * We wanted the peer to authenticate itself, and it refused:
AndyA 22:0dd9c1b5664a 466 * treat it as though it authenticated with PAP using a username
AndyA 22:0dd9c1b5664a 467 * of "" and a password of "". If that's not OK, boot it out.
AndyA 22:0dd9c1b5664a 468 */
AndyA 22:0dd9c1b5664a 469 if (!wo->neg_upap || !null_login(unit)) {
AndyA 22:0dd9c1b5664a 470 AUTHDEBUG(LOG_WARNING, ("peer refused to authenticate\n"));
AndyA 22:0dd9c1b5664a 471 lcp_close(unit, "peer refused to authenticate");
AndyA 22:0dd9c1b5664a 472 return;
AndyA 22:0dd9c1b5664a 473 }
AndyA 22:0dd9c1b5664a 474 }
AndyA 22:0dd9c1b5664a 475
AndyA 22:0dd9c1b5664a 476 lcp_phase[unit] = PHASE_AUTHENTICATE;
AndyA 22:0dd9c1b5664a 477 auth = 0;
AndyA 22:0dd9c1b5664a 478 #if CHAP_SUPPORT
AndyA 22:0dd9c1b5664a 479 if (go->neg_chap) {
AndyA 22:0dd9c1b5664a 480 ChapAuthPeer(unit, ppp_settings.our_name, go->chap_mdtype);
AndyA 22:0dd9c1b5664a 481 auth |= CHAP_PEER;
AndyA 22:0dd9c1b5664a 482 }
AndyA 22:0dd9c1b5664a 483 #endif /* CHAP_SUPPORT */
AndyA 22:0dd9c1b5664a 484 #if PAP_SUPPORT && CHAP_SUPPORT
AndyA 22:0dd9c1b5664a 485 else
AndyA 22:0dd9c1b5664a 486 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
AndyA 22:0dd9c1b5664a 487 #if PAP_SUPPORT
AndyA 22:0dd9c1b5664a 488 if (go->neg_upap) {
AndyA 22:0dd9c1b5664a 489 upap_authpeer(unit);
AndyA 22:0dd9c1b5664a 490 auth |= PAP_PEER;
AndyA 22:0dd9c1b5664a 491 }
AndyA 22:0dd9c1b5664a 492 #endif /* PAP_SUPPORT */
AndyA 22:0dd9c1b5664a 493 #if CHAP_SUPPORT
AndyA 22:0dd9c1b5664a 494 if (ho->neg_chap) {
AndyA 22:0dd9c1b5664a 495 ChapAuthWithPeer(unit, ppp_settings.user, ho->chap_mdtype);
AndyA 22:0dd9c1b5664a 496 auth |= CHAP_WITHPEER;
AndyA 22:0dd9c1b5664a 497 }
AndyA 22:0dd9c1b5664a 498 #endif /* CHAP_SUPPORT */
AndyA 22:0dd9c1b5664a 499 #if PAP_SUPPORT && CHAP_SUPPORT
AndyA 22:0dd9c1b5664a 500 else
AndyA 22:0dd9c1b5664a 501 #endif /* PAP_SUPPORT && CHAP_SUPPORT */
AndyA 22:0dd9c1b5664a 502 #if PAP_SUPPORT
AndyA 22:0dd9c1b5664a 503 if (ho->neg_upap) {
AndyA 22:0dd9c1b5664a 504 if (ppp_settings.passwd[0] == 0) {
AndyA 22:0dd9c1b5664a 505 passwd_from_file = 1;
AndyA 22:0dd9c1b5664a 506 if (!get_pap_passwd(unit, ppp_settings.user, ppp_settings.passwd)) {
AndyA 22:0dd9c1b5664a 507 AUTHDEBUG(LOG_ERR, ("No secret found for PAP login\n"));
AndyA 22:0dd9c1b5664a 508 }
AndyA 22:0dd9c1b5664a 509 }
AndyA 22:0dd9c1b5664a 510 upap_authwithpeer(unit, ppp_settings.user, ppp_settings.passwd);
AndyA 22:0dd9c1b5664a 511 auth |= PAP_WITHPEER;
AndyA 22:0dd9c1b5664a 512 }
AndyA 22:0dd9c1b5664a 513 #endif /* PAP_SUPPORT */
AndyA 22:0dd9c1b5664a 514 auth_pending[unit] = auth;
AndyA 22:0dd9c1b5664a 515
AndyA 22:0dd9c1b5664a 516 if (!auth) {
AndyA 22:0dd9c1b5664a 517 network_phase(unit);
AndyA 22:0dd9c1b5664a 518 }
AndyA 22:0dd9c1b5664a 519 }
AndyA 22:0dd9c1b5664a 520
AndyA 22:0dd9c1b5664a 521 /*
AndyA 22:0dd9c1b5664a 522 * Proceed to the network phase.
AndyA 22:0dd9c1b5664a 523 */
AndyA 22:0dd9c1b5664a 524 static void
AndyA 22:0dd9c1b5664a 525 network_phase(int unit)
AndyA 22:0dd9c1b5664a 526 {
AndyA 22:0dd9c1b5664a 527 int i;
AndyA 22:0dd9c1b5664a 528 struct protent *protp;
AndyA 22:0dd9c1b5664a 529 lcp_options *go = &lcp_gotoptions[unit];
AndyA 22:0dd9c1b5664a 530
AndyA 22:0dd9c1b5664a 531 /*
AndyA 22:0dd9c1b5664a 532 * If the peer had to authenticate, run the auth-up script now.
AndyA 22:0dd9c1b5664a 533 */
AndyA 22:0dd9c1b5664a 534 if ((go->neg_chap || go->neg_upap) && !did_authup) {
AndyA 22:0dd9c1b5664a 535 /* XXX Do setup for peer authentication. */
AndyA 22:0dd9c1b5664a 536 did_authup = 1;
AndyA 22:0dd9c1b5664a 537 }
AndyA 22:0dd9c1b5664a 538
AndyA 22:0dd9c1b5664a 539 #if CBCP_SUPPORT
AndyA 22:0dd9c1b5664a 540 /*
AndyA 22:0dd9c1b5664a 541 * If we negotiated callback, do it now.
AndyA 22:0dd9c1b5664a 542 */
AndyA 22:0dd9c1b5664a 543 if (go->neg_cbcp) {
AndyA 22:0dd9c1b5664a 544 lcp_phase[unit] = PHASE_CALLBACK;
AndyA 22:0dd9c1b5664a 545 (*cbcp_protent.open)(unit);
AndyA 22:0dd9c1b5664a 546 return;
AndyA 22:0dd9c1b5664a 547 }
AndyA 22:0dd9c1b5664a 548 #endif /* CBCP_SUPPORT */
AndyA 22:0dd9c1b5664a 549
AndyA 22:0dd9c1b5664a 550 lcp_phase[unit] = PHASE_NETWORK;
AndyA 22:0dd9c1b5664a 551 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
AndyA 22:0dd9c1b5664a 552 if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {
AndyA 22:0dd9c1b5664a 553 (*protp->open)(unit);
AndyA 22:0dd9c1b5664a 554 if (protp->protocol != PPP_CCP) {
AndyA 22:0dd9c1b5664a 555 ++num_np_open;
AndyA 22:0dd9c1b5664a 556 }
AndyA 22:0dd9c1b5664a 557 }
AndyA 22:0dd9c1b5664a 558 }
AndyA 22:0dd9c1b5664a 559
AndyA 22:0dd9c1b5664a 560 if (num_np_open == 0) {
AndyA 22:0dd9c1b5664a 561 /* nothing to do */
AndyA 22:0dd9c1b5664a 562 lcp_close(0, "No network protocols running");
AndyA 22:0dd9c1b5664a 563 }
AndyA 22:0dd9c1b5664a 564 }
AndyA 22:0dd9c1b5664a 565 /* @todo: add void start_networks(void) here (pppd 2.3.11) */
AndyA 22:0dd9c1b5664a 566
AndyA 22:0dd9c1b5664a 567 /*
AndyA 22:0dd9c1b5664a 568 * The peer has failed to authenticate himself using `protocol'.
AndyA 22:0dd9c1b5664a 569 */
AndyA 22:0dd9c1b5664a 570 void
AndyA 22:0dd9c1b5664a 571 auth_peer_fail(int unit, u16_t protocol)
AndyA 22:0dd9c1b5664a 572 {
AndyA 22:0dd9c1b5664a 573 LWIP_UNUSED_ARG(protocol);
AndyA 22:0dd9c1b5664a 574
AndyA 22:0dd9c1b5664a 575 AUTHDEBUG(LOG_INFO, ("auth_peer_fail: %d proto=%X\n", unit, protocol));
AndyA 22:0dd9c1b5664a 576 /*
AndyA 22:0dd9c1b5664a 577 * Authentication failure: take the link down
AndyA 22:0dd9c1b5664a 578 */
AndyA 22:0dd9c1b5664a 579 lcp_close(unit, "Authentication failed");
AndyA 22:0dd9c1b5664a 580 }
AndyA 22:0dd9c1b5664a 581
AndyA 22:0dd9c1b5664a 582
AndyA 22:0dd9c1b5664a 583 #if PAP_SUPPORT || CHAP_SUPPORT
AndyA 22:0dd9c1b5664a 584 /*
AndyA 22:0dd9c1b5664a 585 * The peer has been successfully authenticated using `protocol'.
AndyA 22:0dd9c1b5664a 586 */
AndyA 22:0dd9c1b5664a 587 void
AndyA 22:0dd9c1b5664a 588 auth_peer_success(int unit, u16_t protocol, char *name, int namelen)
AndyA 22:0dd9c1b5664a 589 {
AndyA 22:0dd9c1b5664a 590 int pbit;
AndyA 22:0dd9c1b5664a 591
AndyA 22:0dd9c1b5664a 592 AUTHDEBUG(LOG_INFO, ("auth_peer_success: %d proto=%X\n", unit, protocol));
AndyA 22:0dd9c1b5664a 593 switch (protocol) {
AndyA 22:0dd9c1b5664a 594 case PPP_CHAP:
AndyA 22:0dd9c1b5664a 595 pbit = CHAP_PEER;
AndyA 22:0dd9c1b5664a 596 break;
AndyA 22:0dd9c1b5664a 597 case PPP_PAP:
AndyA 22:0dd9c1b5664a 598 pbit = PAP_PEER;
AndyA 22:0dd9c1b5664a 599 break;
AndyA 22:0dd9c1b5664a 600 default:
AndyA 22:0dd9c1b5664a 601 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
AndyA 22:0dd9c1b5664a 602 return;
AndyA 22:0dd9c1b5664a 603 }
AndyA 22:0dd9c1b5664a 604
AndyA 22:0dd9c1b5664a 605 /*
AndyA 22:0dd9c1b5664a 606 * Save the authenticated name of the peer for later.
AndyA 22:0dd9c1b5664a 607 */
AndyA 22:0dd9c1b5664a 608 if (namelen > (int)sizeof(peer_authname) - 1) {
AndyA 22:0dd9c1b5664a 609 namelen = sizeof(peer_authname) - 1;
AndyA 22:0dd9c1b5664a 610 }
AndyA 22:0dd9c1b5664a 611 BCOPY(name, peer_authname, namelen);
AndyA 22:0dd9c1b5664a 612 peer_authname[namelen] = 0;
AndyA 22:0dd9c1b5664a 613
AndyA 22:0dd9c1b5664a 614 /*
AndyA 22:0dd9c1b5664a 615 * If there is no more authentication still to be done,
AndyA 22:0dd9c1b5664a 616 * proceed to the network (or callback) phase.
AndyA 22:0dd9c1b5664a 617 */
AndyA 22:0dd9c1b5664a 618 if ((auth_pending[unit] &= ~pbit) == 0) {
AndyA 22:0dd9c1b5664a 619 network_phase(unit);
AndyA 22:0dd9c1b5664a 620 }
AndyA 22:0dd9c1b5664a 621 }
AndyA 22:0dd9c1b5664a 622
AndyA 22:0dd9c1b5664a 623 /*
AndyA 22:0dd9c1b5664a 624 * We have failed to authenticate ourselves to the peer using `protocol'.
AndyA 22:0dd9c1b5664a 625 */
AndyA 22:0dd9c1b5664a 626 void
AndyA 22:0dd9c1b5664a 627 auth_withpeer_fail(int unit, u16_t protocol)
AndyA 22:0dd9c1b5664a 628 {
AndyA 22:0dd9c1b5664a 629 int errCode = PPPERR_AUTHFAIL;
AndyA 22:0dd9c1b5664a 630
AndyA 22:0dd9c1b5664a 631 LWIP_UNUSED_ARG(protocol);
AndyA 22:0dd9c1b5664a 632
AndyA 22:0dd9c1b5664a 633 AUTHDEBUG(LOG_INFO, ("auth_withpeer_fail: %d proto=%X\n", unit, protocol));
AndyA 22:0dd9c1b5664a 634 if (passwd_from_file) {
AndyA 22:0dd9c1b5664a 635 BZERO(ppp_settings.passwd, MAXSECRETLEN);
AndyA 22:0dd9c1b5664a 636 }
AndyA 22:0dd9c1b5664a 637
AndyA 22:0dd9c1b5664a 638 /*
AndyA 22:0dd9c1b5664a 639 * We've failed to authenticate ourselves to our peer.
AndyA 22:0dd9c1b5664a 640 * He'll probably take the link down, and there's not much
AndyA 22:0dd9c1b5664a 641 * we can do except wait for that.
AndyA 22:0dd9c1b5664a 642 */
AndyA 22:0dd9c1b5664a 643 pppIOCtl(unit, PPPCTLS_ERRCODE, &errCode);
AndyA 22:0dd9c1b5664a 644 lcp_close(unit, "Failed to authenticate ourselves to peer");
AndyA 22:0dd9c1b5664a 645 }
AndyA 22:0dd9c1b5664a 646
AndyA 22:0dd9c1b5664a 647 /*
AndyA 22:0dd9c1b5664a 648 * We have successfully authenticated ourselves with the peer using `protocol'.
AndyA 22:0dd9c1b5664a 649 */
AndyA 22:0dd9c1b5664a 650 void
AndyA 22:0dd9c1b5664a 651 auth_withpeer_success(int unit, u16_t protocol)
AndyA 22:0dd9c1b5664a 652 {
AndyA 22:0dd9c1b5664a 653 int pbit;
AndyA 22:0dd9c1b5664a 654
AndyA 22:0dd9c1b5664a 655 AUTHDEBUG(LOG_INFO, ("auth_withpeer_success: %d proto=%X\n", unit, protocol));
AndyA 22:0dd9c1b5664a 656 switch (protocol) {
AndyA 22:0dd9c1b5664a 657 case PPP_CHAP:
AndyA 22:0dd9c1b5664a 658 pbit = CHAP_WITHPEER;
AndyA 22:0dd9c1b5664a 659 break;
AndyA 22:0dd9c1b5664a 660 case PPP_PAP:
AndyA 22:0dd9c1b5664a 661 if (passwd_from_file) {
AndyA 22:0dd9c1b5664a 662 BZERO(ppp_settings.passwd, MAXSECRETLEN);
AndyA 22:0dd9c1b5664a 663 }
AndyA 22:0dd9c1b5664a 664 pbit = PAP_WITHPEER;
AndyA 22:0dd9c1b5664a 665 break;
AndyA 22:0dd9c1b5664a 666 default:
AndyA 22:0dd9c1b5664a 667 AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));
AndyA 22:0dd9c1b5664a 668 pbit = 0;
AndyA 22:0dd9c1b5664a 669 }
AndyA 22:0dd9c1b5664a 670
AndyA 22:0dd9c1b5664a 671 /*
AndyA 22:0dd9c1b5664a 672 * If there is no more authentication still being done,
AndyA 22:0dd9c1b5664a 673 * proceed to the network (or callback) phase.
AndyA 22:0dd9c1b5664a 674 */
AndyA 22:0dd9c1b5664a 675 if ((auth_pending[unit] &= ~pbit) == 0) {
AndyA 22:0dd9c1b5664a 676 network_phase(unit);
AndyA 22:0dd9c1b5664a 677 }
AndyA 22:0dd9c1b5664a 678 }
AndyA 22:0dd9c1b5664a 679 #endif /* PAP_SUPPORT || CHAP_SUPPORT */
AndyA 22:0dd9c1b5664a 680
AndyA 22:0dd9c1b5664a 681
AndyA 22:0dd9c1b5664a 682 /*
AndyA 22:0dd9c1b5664a 683 * np_up - a network protocol has come up.
AndyA 22:0dd9c1b5664a 684 */
AndyA 22:0dd9c1b5664a 685 void
AndyA 22:0dd9c1b5664a 686 np_up(int unit, u16_t proto)
AndyA 22:0dd9c1b5664a 687 {
AndyA 22:0dd9c1b5664a 688 LWIP_UNUSED_ARG(unit);
AndyA 22:0dd9c1b5664a 689 LWIP_UNUSED_ARG(proto);
AndyA 22:0dd9c1b5664a 690
AndyA 22:0dd9c1b5664a 691 AUTHDEBUG(LOG_INFO, ("np_up: %d proto=%X\n", unit, proto));
AndyA 22:0dd9c1b5664a 692 if (num_np_up == 0) {
AndyA 22:0dd9c1b5664a 693 AUTHDEBUG(LOG_INFO, ("np_up: maxconnect=%d idle_time_limit=%d\n",ppp_settings.maxconnect,ppp_settings.idle_time_limit));
AndyA 22:0dd9c1b5664a 694 /*
AndyA 22:0dd9c1b5664a 695 * At this point we consider that the link has come up successfully.
AndyA 22:0dd9c1b5664a 696 */
AndyA 22:0dd9c1b5664a 697 if (ppp_settings.idle_time_limit > 0) {
AndyA 22:0dd9c1b5664a 698 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit);
AndyA 22:0dd9c1b5664a 699 }
AndyA 22:0dd9c1b5664a 700
AndyA 22:0dd9c1b5664a 701 /*
AndyA 22:0dd9c1b5664a 702 * Set a timeout to close the connection once the maximum
AndyA 22:0dd9c1b5664a 703 * connect time has expired.
AndyA 22:0dd9c1b5664a 704 */
AndyA 22:0dd9c1b5664a 705 if (ppp_settings.maxconnect > 0) {
AndyA 22:0dd9c1b5664a 706 TIMEOUT(connect_time_expired, 0, ppp_settings.maxconnect);
AndyA 22:0dd9c1b5664a 707 }
AndyA 22:0dd9c1b5664a 708 }
AndyA 22:0dd9c1b5664a 709 ++num_np_up;
AndyA 22:0dd9c1b5664a 710 }
AndyA 22:0dd9c1b5664a 711
AndyA 22:0dd9c1b5664a 712 /*
AndyA 22:0dd9c1b5664a 713 * np_down - a network protocol has gone down.
AndyA 22:0dd9c1b5664a 714 */
AndyA 22:0dd9c1b5664a 715 void
AndyA 22:0dd9c1b5664a 716 np_down(int unit, u16_t proto)
AndyA 22:0dd9c1b5664a 717 {
AndyA 22:0dd9c1b5664a 718 LWIP_UNUSED_ARG(unit);
AndyA 22:0dd9c1b5664a 719 LWIP_UNUSED_ARG(proto);
AndyA 22:0dd9c1b5664a 720
AndyA 22:0dd9c1b5664a 721 AUTHDEBUG(LOG_INFO, ("np_down: %d proto=%X\n", unit, proto));
AndyA 22:0dd9c1b5664a 722 if (--num_np_up == 0 && ppp_settings.idle_time_limit > 0) {
AndyA 22:0dd9c1b5664a 723 UNTIMEOUT(check_idle, NULL);
AndyA 22:0dd9c1b5664a 724 }
AndyA 22:0dd9c1b5664a 725 }
AndyA 22:0dd9c1b5664a 726
AndyA 22:0dd9c1b5664a 727 /*
AndyA 22:0dd9c1b5664a 728 * np_finished - a network protocol has finished using the link.
AndyA 22:0dd9c1b5664a 729 */
AndyA 22:0dd9c1b5664a 730 void
AndyA 22:0dd9c1b5664a 731 np_finished(int unit, u16_t proto)
AndyA 22:0dd9c1b5664a 732 {
AndyA 22:0dd9c1b5664a 733 LWIP_UNUSED_ARG(unit);
AndyA 22:0dd9c1b5664a 734 LWIP_UNUSED_ARG(proto);
AndyA 22:0dd9c1b5664a 735
AndyA 22:0dd9c1b5664a 736 AUTHDEBUG(LOG_INFO, ("np_finished: %d proto=%X\n", unit, proto));
AndyA 22:0dd9c1b5664a 737 if (--num_np_open <= 0) {
AndyA 22:0dd9c1b5664a 738 /* no further use for the link: shut up shop. */
AndyA 22:0dd9c1b5664a 739 lcp_close(0, "No network protocols running");
AndyA 22:0dd9c1b5664a 740 }
AndyA 22:0dd9c1b5664a 741 }
AndyA 22:0dd9c1b5664a 742
AndyA 22:0dd9c1b5664a 743 /*
AndyA 22:0dd9c1b5664a 744 * check_idle - check whether the link has been idle for long
AndyA 22:0dd9c1b5664a 745 * enough that we can shut it down.
AndyA 22:0dd9c1b5664a 746 */
AndyA 22:0dd9c1b5664a 747 static void
AndyA 22:0dd9c1b5664a 748 check_idle(void *arg)
AndyA 22:0dd9c1b5664a 749 {
AndyA 22:0dd9c1b5664a 750 struct ppp_idle idle;
AndyA 22:0dd9c1b5664a 751 u_short itime;
AndyA 22:0dd9c1b5664a 752
AndyA 22:0dd9c1b5664a 753 LWIP_UNUSED_ARG(arg);
AndyA 22:0dd9c1b5664a 754 if (!get_idle_time(0, &idle)) {
AndyA 22:0dd9c1b5664a 755 return;
AndyA 22:0dd9c1b5664a 756 }
AndyA 22:0dd9c1b5664a 757 itime = LWIP_MIN(idle.xmit_idle, idle.recv_idle);
AndyA 22:0dd9c1b5664a 758 if (itime >= ppp_settings.idle_time_limit) {
AndyA 22:0dd9c1b5664a 759 /* link is idle: shut it down. */
AndyA 22:0dd9c1b5664a 760 AUTHDEBUG(LOG_INFO, ("Terminating connection due to lack of activity.\n"));
AndyA 22:0dd9c1b5664a 761 lcp_close(0, "Link inactive");
AndyA 22:0dd9c1b5664a 762 } else {
AndyA 22:0dd9c1b5664a 763 TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit - itime);
AndyA 22:0dd9c1b5664a 764 }
AndyA 22:0dd9c1b5664a 765 }
AndyA 22:0dd9c1b5664a 766
AndyA 22:0dd9c1b5664a 767 /*
AndyA 22:0dd9c1b5664a 768 * connect_time_expired - log a message and close the connection.
AndyA 22:0dd9c1b5664a 769 */
AndyA 22:0dd9c1b5664a 770 static void
AndyA 22:0dd9c1b5664a 771 connect_time_expired(void *arg)
AndyA 22:0dd9c1b5664a 772 {
AndyA 22:0dd9c1b5664a 773 LWIP_UNUSED_ARG(arg);
AndyA 22:0dd9c1b5664a 774
AndyA 22:0dd9c1b5664a 775 AUTHDEBUG(LOG_INFO, ("Connect time expired\n"));
AndyA 22:0dd9c1b5664a 776 lcp_close(0, "Connect time expired"); /* Close connection */
AndyA 22:0dd9c1b5664a 777 }
AndyA 22:0dd9c1b5664a 778
AndyA 22:0dd9c1b5664a 779 #if 0 /* UNUSED */
AndyA 22:0dd9c1b5664a 780 /*
AndyA 22:0dd9c1b5664a 781 * auth_check_options - called to check authentication options.
AndyA 22:0dd9c1b5664a 782 */
AndyA 22:0dd9c1b5664a 783 void
AndyA 22:0dd9c1b5664a 784 auth_check_options(void)
AndyA 22:0dd9c1b5664a 785 {
AndyA 22:0dd9c1b5664a 786 lcp_options *wo = &lcp_wantoptions[0];
AndyA 22:0dd9c1b5664a 787 int can_auth;
AndyA 22:0dd9c1b5664a 788 ipcp_options *ipwo = &ipcp_wantoptions[0];
AndyA 22:0dd9c1b5664a 789 u32_t remote;
AndyA 22:0dd9c1b5664a 790
AndyA 22:0dd9c1b5664a 791 /* Default our_name to hostname, and user to our_name */
AndyA 22:0dd9c1b5664a 792 if (ppp_settings.our_name[0] == 0 || ppp_settings.usehostname) {
AndyA 22:0dd9c1b5664a 793 strcpy(ppp_settings.our_name, ppp_settings.hostname);
AndyA 22:0dd9c1b5664a 794 }
AndyA 22:0dd9c1b5664a 795
AndyA 22:0dd9c1b5664a 796 if (ppp_settings.user[0] == 0) {
AndyA 22:0dd9c1b5664a 797 strcpy(ppp_settings.user, ppp_settings.our_name);
AndyA 22:0dd9c1b5664a 798 }
AndyA 22:0dd9c1b5664a 799
AndyA 22:0dd9c1b5664a 800 /* If authentication is required, ask peer for CHAP or PAP. */
AndyA 22:0dd9c1b5664a 801 if (ppp_settings.auth_required && !wo->neg_chap && !wo->neg_upap) {
AndyA 22:0dd9c1b5664a 802 wo->neg_chap = 1;
AndyA 22:0dd9c1b5664a 803 wo->neg_upap = 1;
AndyA 22:0dd9c1b5664a 804 }
AndyA 22:0dd9c1b5664a 805
AndyA 22:0dd9c1b5664a 806 /*
AndyA 22:0dd9c1b5664a 807 * Check whether we have appropriate secrets to use
AndyA 22:0dd9c1b5664a 808 * to authenticate the peer.
AndyA 22:0dd9c1b5664a 809 */
AndyA 22:0dd9c1b5664a 810 can_auth = wo->neg_upap && have_pap_secret();
AndyA 22:0dd9c1b5664a 811 if (!can_auth && wo->neg_chap) {
AndyA 22:0dd9c1b5664a 812 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
AndyA 22:0dd9c1b5664a 813 can_auth = have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote);
AndyA 22:0dd9c1b5664a 814 }
AndyA 22:0dd9c1b5664a 815
AndyA 22:0dd9c1b5664a 816 if (ppp_settings.auth_required && !can_auth) {
AndyA 22:0dd9c1b5664a 817 ppp_panic("No auth secret");
AndyA 22:0dd9c1b5664a 818 }
AndyA 22:0dd9c1b5664a 819 }
AndyA 22:0dd9c1b5664a 820 #endif /* UNUSED */
AndyA 22:0dd9c1b5664a 821
AndyA 22:0dd9c1b5664a 822 /*
AndyA 22:0dd9c1b5664a 823 * auth_reset - called when LCP is starting negotiations to recheck
AndyA 22:0dd9c1b5664a 824 * authentication options, i.e. whether we have appropriate secrets
AndyA 22:0dd9c1b5664a 825 * to use for authenticating ourselves and/or the peer.
AndyA 22:0dd9c1b5664a 826 */
AndyA 22:0dd9c1b5664a 827 void
AndyA 22:0dd9c1b5664a 828 auth_reset(int unit)
AndyA 22:0dd9c1b5664a 829 {
AndyA 22:0dd9c1b5664a 830 lcp_options *go = &lcp_gotoptions[unit];
AndyA 22:0dd9c1b5664a 831 lcp_options *ao = &lcp_allowoptions[0];
AndyA 22:0dd9c1b5664a 832 ipcp_options *ipwo = &ipcp_wantoptions[0];
AndyA 22:0dd9c1b5664a 833 u32_t remote;
AndyA 22:0dd9c1b5664a 834
AndyA 22:0dd9c1b5664a 835 AUTHDEBUG(LOG_INFO, ("auth_reset: %d\n", unit));
AndyA 22:0dd9c1b5664a 836 ao->neg_upap = !ppp_settings.refuse_pap && (ppp_settings.passwd[0] != 0 || get_pap_passwd(unit, NULL, NULL));
AndyA 22:0dd9c1b5664a 837 ao->neg_chap = !ppp_settings.refuse_chap && ppp_settings.passwd[0] != 0 /*have_chap_secret(ppp_settings.user, ppp_settings.remote_name, (u32_t)0)*/;
AndyA 22:0dd9c1b5664a 838
AndyA 22:0dd9c1b5664a 839 if (go->neg_upap && !have_pap_secret()) {
AndyA 22:0dd9c1b5664a 840 go->neg_upap = 0;
AndyA 22:0dd9c1b5664a 841 }
AndyA 22:0dd9c1b5664a 842 if (go->neg_chap) {
AndyA 22:0dd9c1b5664a 843 remote = ipwo->accept_remote? 0: ipwo->hisaddr;
AndyA 22:0dd9c1b5664a 844 if (!have_chap_secret(ppp_settings.remote_name, ppp_settings.our_name, remote)) {
AndyA 22:0dd9c1b5664a 845 go->neg_chap = 0;
AndyA 22:0dd9c1b5664a 846 }
AndyA 22:0dd9c1b5664a 847 }
AndyA 22:0dd9c1b5664a 848 }
AndyA 22:0dd9c1b5664a 849
AndyA 22:0dd9c1b5664a 850 #if PAP_SUPPORT
AndyA 22:0dd9c1b5664a 851 /*
AndyA 22:0dd9c1b5664a 852 * check_passwd - Check the user name and passwd against the PAP secrets
AndyA 22:0dd9c1b5664a 853 * file. If requested, also check against the system password database,
AndyA 22:0dd9c1b5664a 854 * and login the user if OK.
AndyA 22:0dd9c1b5664a 855 *
AndyA 22:0dd9c1b5664a 856 * returns:
AndyA 22:0dd9c1b5664a 857 * UPAP_AUTHNAK: Authentication failed.
AndyA 22:0dd9c1b5664a 858 * UPAP_AUTHACK: Authentication succeeded.
AndyA 22:0dd9c1b5664a 859 * In either case, msg points to an appropriate message.
AndyA 22:0dd9c1b5664a 860 */
AndyA 22:0dd9c1b5664a 861 u_char
AndyA 22:0dd9c1b5664a 862 check_passwd( int unit, char *auser, int userlen, char *apasswd, int passwdlen, char **msg, int *msglen)
AndyA 22:0dd9c1b5664a 863 {
AndyA 22:0dd9c1b5664a 864 #if 1 /* XXX Assume all entries OK. */
AndyA 22:0dd9c1b5664a 865 LWIP_UNUSED_ARG(unit);
AndyA 22:0dd9c1b5664a 866 LWIP_UNUSED_ARG(auser);
AndyA 22:0dd9c1b5664a 867 LWIP_UNUSED_ARG(userlen);
AndyA 22:0dd9c1b5664a 868 LWIP_UNUSED_ARG(apasswd);
AndyA 22:0dd9c1b5664a 869 LWIP_UNUSED_ARG(passwdlen);
AndyA 22:0dd9c1b5664a 870 LWIP_UNUSED_ARG(msglen);
AndyA 22:0dd9c1b5664a 871 *msg = (char *) 0;
AndyA 22:0dd9c1b5664a 872 return UPAP_AUTHACK; /* XXX Assume all entries OK. */
AndyA 22:0dd9c1b5664a 873 #else
AndyA 22:0dd9c1b5664a 874 u_char ret = 0;
AndyA 22:0dd9c1b5664a 875 struct wordlist *addrs = NULL;
AndyA 22:0dd9c1b5664a 876 char passwd[256], user[256];
AndyA 22:0dd9c1b5664a 877 char secret[MAXWORDLEN];
AndyA 22:0dd9c1b5664a 878 static u_short attempts = 0;
AndyA 22:0dd9c1b5664a 879
AndyA 22:0dd9c1b5664a 880 /*
AndyA 22:0dd9c1b5664a 881 * Make copies of apasswd and auser, then null-terminate them.
AndyA 22:0dd9c1b5664a 882 */
AndyA 22:0dd9c1b5664a 883 BCOPY(apasswd, passwd, passwdlen);
AndyA 22:0dd9c1b5664a 884 passwd[passwdlen] = '\0';
AndyA 22:0dd9c1b5664a 885 BCOPY(auser, user, userlen);
AndyA 22:0dd9c1b5664a 886 user[userlen] = '\0';
AndyA 22:0dd9c1b5664a 887 *msg = (char *) 0;
AndyA 22:0dd9c1b5664a 888
AndyA 22:0dd9c1b5664a 889 /* XXX Validate user name and password. */
AndyA 22:0dd9c1b5664a 890 ret = UPAP_AUTHACK; /* XXX Assume all entries OK. */
AndyA 22:0dd9c1b5664a 891
AndyA 22:0dd9c1b5664a 892 if (ret == UPAP_AUTHNAK) {
AndyA 22:0dd9c1b5664a 893 if (*msg == (char *) 0) {
AndyA 22:0dd9c1b5664a 894 *msg = "Login incorrect";
AndyA 22:0dd9c1b5664a 895 }
AndyA 22:0dd9c1b5664a 896 *msglen = strlen(*msg);
AndyA 22:0dd9c1b5664a 897 /*
AndyA 22:0dd9c1b5664a 898 * Frustrate passwd stealer programs.
AndyA 22:0dd9c1b5664a 899 * Allow 10 tries, but start backing off after 3 (stolen from login).
AndyA 22:0dd9c1b5664a 900 * On 10'th, drop the connection.
AndyA 22:0dd9c1b5664a 901 */
AndyA 22:0dd9c1b5664a 902 if (attempts++ >= 10) {
AndyA 22:0dd9c1b5664a 903 AUTHDEBUG(LOG_WARNING, ("%d LOGIN FAILURES BY %s\n", attempts, user));
AndyA 22:0dd9c1b5664a 904 /*ppp_panic("Excess Bad Logins");*/
AndyA 22:0dd9c1b5664a 905 }
AndyA 22:0dd9c1b5664a 906 if (attempts > 3) {
AndyA 22:0dd9c1b5664a 907 /* @todo: this was sleep(), i.e. seconds, not milliseconds
AndyA 22:0dd9c1b5664a 908 * I don't think we really need this in lwIP - we would block tcpip_thread!
AndyA 22:0dd9c1b5664a 909 */
AndyA 22:0dd9c1b5664a 910 /*sys_msleep((attempts - 3) * 5);*/
AndyA 22:0dd9c1b5664a 911 }
AndyA 22:0dd9c1b5664a 912 if (addrs != NULL) {
AndyA 22:0dd9c1b5664a 913 free_wordlist(addrs);
AndyA 22:0dd9c1b5664a 914 }
AndyA 22:0dd9c1b5664a 915 } else {
AndyA 22:0dd9c1b5664a 916 attempts = 0; /* Reset count */
AndyA 22:0dd9c1b5664a 917 if (*msg == (char *) 0) {
AndyA 22:0dd9c1b5664a 918 *msg = "Login ok";
AndyA 22:0dd9c1b5664a 919 }
AndyA 22:0dd9c1b5664a 920 *msglen = strlen(*msg);
AndyA 22:0dd9c1b5664a 921 set_allowed_addrs(unit, addrs);
AndyA 22:0dd9c1b5664a 922 }
AndyA 22:0dd9c1b5664a 923
AndyA 22:0dd9c1b5664a 924 BZERO(passwd, sizeof(passwd));
AndyA 22:0dd9c1b5664a 925 BZERO(secret, sizeof(secret));
AndyA 22:0dd9c1b5664a 926
AndyA 22:0dd9c1b5664a 927 return ret;
AndyA 22:0dd9c1b5664a 928 #endif
AndyA 22:0dd9c1b5664a 929 }
AndyA 22:0dd9c1b5664a 930 #endif /* PAP_SUPPORT */
AndyA 22:0dd9c1b5664a 931
AndyA 22:0dd9c1b5664a 932 #if 0 /* UNUSED */
AndyA 22:0dd9c1b5664a 933 /*
AndyA 22:0dd9c1b5664a 934 * This function is needed for PAM.
AndyA 22:0dd9c1b5664a 935 */
AndyA 22:0dd9c1b5664a 936
AndyA 22:0dd9c1b5664a 937 #ifdef USE_PAM
AndyA 22:0dd9c1b5664a 938
AndyA 22:0dd9c1b5664a 939 /* lwip does not support PAM*/
AndyA 22:0dd9c1b5664a 940
AndyA 22:0dd9c1b5664a 941 #endif /* USE_PAM */
AndyA 22:0dd9c1b5664a 942
AndyA 22:0dd9c1b5664a 943 #endif /* UNUSED */
AndyA 22:0dd9c1b5664a 944
AndyA 22:0dd9c1b5664a 945
AndyA 22:0dd9c1b5664a 946 #if 0 /* UNUSED */
AndyA 22:0dd9c1b5664a 947 /*
AndyA 22:0dd9c1b5664a 948 * plogin - Check the user name and password against the system
AndyA 22:0dd9c1b5664a 949 * password database, and login the user if OK.
AndyA 22:0dd9c1b5664a 950 *
AndyA 22:0dd9c1b5664a 951 * returns:
AndyA 22:0dd9c1b5664a 952 * UPAP_AUTHNAK: Login failed.
AndyA 22:0dd9c1b5664a 953 * UPAP_AUTHACK: Login succeeded.
AndyA 22:0dd9c1b5664a 954 * In either case, msg points to an appropriate message.
AndyA 22:0dd9c1b5664a 955 */
AndyA 22:0dd9c1b5664a 956 static int
AndyA 22:0dd9c1b5664a 957 plogin(char *user, char *passwd, char **msg, int *msglen)
AndyA 22:0dd9c1b5664a 958 {
AndyA 22:0dd9c1b5664a 959
AndyA 22:0dd9c1b5664a 960 LWIP_UNUSED_ARG(user);
AndyA 22:0dd9c1b5664a 961 LWIP_UNUSED_ARG(passwd);
AndyA 22:0dd9c1b5664a 962 LWIP_UNUSED_ARG(msg);
AndyA 22:0dd9c1b5664a 963 LWIP_UNUSED_ARG(msglen);
AndyA 22:0dd9c1b5664a 964
AndyA 22:0dd9c1b5664a 965
AndyA 22:0dd9c1b5664a 966 /* The new lines are here align the file when
AndyA 22:0dd9c1b5664a 967 * compared against the pppd 2.3.11 code */
AndyA 22:0dd9c1b5664a 968
AndyA 22:0dd9c1b5664a 969
AndyA 22:0dd9c1b5664a 970
AndyA 22:0dd9c1b5664a 971
AndyA 22:0dd9c1b5664a 972
AndyA 22:0dd9c1b5664a 973
AndyA 22:0dd9c1b5664a 974
AndyA 22:0dd9c1b5664a 975
AndyA 22:0dd9c1b5664a 976
AndyA 22:0dd9c1b5664a 977
AndyA 22:0dd9c1b5664a 978
AndyA 22:0dd9c1b5664a 979
AndyA 22:0dd9c1b5664a 980
AndyA 22:0dd9c1b5664a 981
AndyA 22:0dd9c1b5664a 982
AndyA 22:0dd9c1b5664a 983
AndyA 22:0dd9c1b5664a 984 /* XXX Fail until we decide that we want to support logins. */
AndyA 22:0dd9c1b5664a 985 return (UPAP_AUTHNAK);
AndyA 22:0dd9c1b5664a 986 }
AndyA 22:0dd9c1b5664a 987 #endif
AndyA 22:0dd9c1b5664a 988
AndyA 22:0dd9c1b5664a 989
AndyA 22:0dd9c1b5664a 990
AndyA 22:0dd9c1b5664a 991 /*
AndyA 22:0dd9c1b5664a 992 * plogout - Logout the user.
AndyA 22:0dd9c1b5664a 993 */
AndyA 22:0dd9c1b5664a 994 static void
AndyA 22:0dd9c1b5664a 995 plogout(void)
AndyA 22:0dd9c1b5664a 996 {
AndyA 22:0dd9c1b5664a 997 logged_in = 0;
AndyA 22:0dd9c1b5664a 998 }
AndyA 22:0dd9c1b5664a 999
AndyA 22:0dd9c1b5664a 1000 /*
AndyA 22:0dd9c1b5664a 1001 * null_login - Check if a username of "" and a password of "" are
AndyA 22:0dd9c1b5664a 1002 * acceptable, and iff so, set the list of acceptable IP addresses
AndyA 22:0dd9c1b5664a 1003 * and return 1.
AndyA 22:0dd9c1b5664a 1004 */
AndyA 22:0dd9c1b5664a 1005 static int
AndyA 22:0dd9c1b5664a 1006 null_login(int unit)
AndyA 22:0dd9c1b5664a 1007 {
AndyA 22:0dd9c1b5664a 1008 LWIP_UNUSED_ARG(unit);
AndyA 22:0dd9c1b5664a 1009 /* XXX Fail until we decide that we want to support logins. */
AndyA 22:0dd9c1b5664a 1010 return 0;
AndyA 22:0dd9c1b5664a 1011 }
AndyA 22:0dd9c1b5664a 1012
AndyA 22:0dd9c1b5664a 1013
AndyA 22:0dd9c1b5664a 1014 /*
AndyA 22:0dd9c1b5664a 1015 * get_pap_passwd - get a password for authenticating ourselves with
AndyA 22:0dd9c1b5664a 1016 * our peer using PAP. Returns 1 on success, 0 if no suitable password
AndyA 22:0dd9c1b5664a 1017 * could be found.
AndyA 22:0dd9c1b5664a 1018 */
AndyA 22:0dd9c1b5664a 1019 static int
AndyA 22:0dd9c1b5664a 1020 get_pap_passwd(int unit, char *user, char *passwd)
AndyA 22:0dd9c1b5664a 1021 {
AndyA 22:0dd9c1b5664a 1022 LWIP_UNUSED_ARG(unit);
AndyA 22:0dd9c1b5664a 1023 /* normally we would reject PAP if no password is provided,
AndyA 22:0dd9c1b5664a 1024 but this causes problems with some providers (like CHT in Taiwan)
AndyA 22:0dd9c1b5664a 1025 who incorrectly request PAP and expect a bogus/empty password, so
AndyA 22:0dd9c1b5664a 1026 always provide a default user/passwd of "none"/"none"
AndyA 22:0dd9c1b5664a 1027
AndyA 22:0dd9c1b5664a 1028 @todo: This should be configured by the user, instead of being hardcoded here!
AndyA 22:0dd9c1b5664a 1029 */
AndyA 22:0dd9c1b5664a 1030 if(user) {
AndyA 22:0dd9c1b5664a 1031 strcpy(user, "none");
AndyA 22:0dd9c1b5664a 1032 }
AndyA 22:0dd9c1b5664a 1033 if(passwd) {
AndyA 22:0dd9c1b5664a 1034 strcpy(passwd, "none");
AndyA 22:0dd9c1b5664a 1035 }
AndyA 22:0dd9c1b5664a 1036 return 1;
AndyA 22:0dd9c1b5664a 1037 }
AndyA 22:0dd9c1b5664a 1038
AndyA 22:0dd9c1b5664a 1039 /*
AndyA 22:0dd9c1b5664a 1040 * have_pap_secret - check whether we have a PAP file with any
AndyA 22:0dd9c1b5664a 1041 * secrets that we could possibly use for authenticating the peer.
AndyA 22:0dd9c1b5664a 1042 */
AndyA 22:0dd9c1b5664a 1043 static int
AndyA 22:0dd9c1b5664a 1044 have_pap_secret(void)
AndyA 22:0dd9c1b5664a 1045 {
AndyA 22:0dd9c1b5664a 1046 /* XXX Fail until we set up our passwords. */
AndyA 22:0dd9c1b5664a 1047 return 0;
AndyA 22:0dd9c1b5664a 1048 }
AndyA 22:0dd9c1b5664a 1049
AndyA 22:0dd9c1b5664a 1050 /*
AndyA 22:0dd9c1b5664a 1051 * have_chap_secret - check whether we have a CHAP file with a
AndyA 22:0dd9c1b5664a 1052 * secret that we could possibly use for authenticating `client'
AndyA 22:0dd9c1b5664a 1053 * on `server'. Either can be the null string, meaning we don't
AndyA 22:0dd9c1b5664a 1054 * know the identity yet.
AndyA 22:0dd9c1b5664a 1055 */
AndyA 22:0dd9c1b5664a 1056 static int
AndyA 22:0dd9c1b5664a 1057 have_chap_secret(char *client, char *server, u32_t remote)
AndyA 22:0dd9c1b5664a 1058 {
AndyA 22:0dd9c1b5664a 1059 LWIP_UNUSED_ARG(client);
AndyA 22:0dd9c1b5664a 1060 LWIP_UNUSED_ARG(server);
AndyA 22:0dd9c1b5664a 1061 LWIP_UNUSED_ARG(remote);
AndyA 22:0dd9c1b5664a 1062
AndyA 22:0dd9c1b5664a 1063 /* XXX Fail until we set up our passwords. */
AndyA 22:0dd9c1b5664a 1064 return 0;
AndyA 22:0dd9c1b5664a 1065 }
AndyA 22:0dd9c1b5664a 1066 #if CHAP_SUPPORT
AndyA 22:0dd9c1b5664a 1067
AndyA 22:0dd9c1b5664a 1068 /*
AndyA 22:0dd9c1b5664a 1069 * get_secret - open the CHAP secret file and return the secret
AndyA 22:0dd9c1b5664a 1070 * for authenticating the given client on the given server.
AndyA 22:0dd9c1b5664a 1071 * (We could be either client or server).
AndyA 22:0dd9c1b5664a 1072 */
AndyA 22:0dd9c1b5664a 1073 int
AndyA 22:0dd9c1b5664a 1074 get_secret(int unit, char *client, char *server, char *secret, int *secret_len, int save_addrs)
AndyA 22:0dd9c1b5664a 1075 {
AndyA 22:0dd9c1b5664a 1076 #if 1
AndyA 22:0dd9c1b5664a 1077 int len;
AndyA 22:0dd9c1b5664a 1078 struct wordlist *addrs;
AndyA 22:0dd9c1b5664a 1079
AndyA 22:0dd9c1b5664a 1080 LWIP_UNUSED_ARG(unit);
AndyA 22:0dd9c1b5664a 1081 LWIP_UNUSED_ARG(server);
AndyA 22:0dd9c1b5664a 1082 LWIP_UNUSED_ARG(save_addrs);
AndyA 22:0dd9c1b5664a 1083
AndyA 22:0dd9c1b5664a 1084 addrs = NULL;
AndyA 22:0dd9c1b5664a 1085
AndyA 22:0dd9c1b5664a 1086 if(!client || !client[0] || strcmp(client, ppp_settings.user)) {
AndyA 22:0dd9c1b5664a 1087 return 0;
AndyA 22:0dd9c1b5664a 1088 }
AndyA 22:0dd9c1b5664a 1089
AndyA 22:0dd9c1b5664a 1090 len = (int)strlen(ppp_settings.passwd);
AndyA 22:0dd9c1b5664a 1091 if (len > MAXSECRETLEN) {
AndyA 22:0dd9c1b5664a 1092 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
AndyA 22:0dd9c1b5664a 1093 len = MAXSECRETLEN;
AndyA 22:0dd9c1b5664a 1094 }
AndyA 22:0dd9c1b5664a 1095
AndyA 22:0dd9c1b5664a 1096 BCOPY(ppp_settings.passwd, secret, len);
AndyA 22:0dd9c1b5664a 1097 *secret_len = len;
AndyA 22:0dd9c1b5664a 1098
AndyA 22:0dd9c1b5664a 1099 return 1;
AndyA 22:0dd9c1b5664a 1100 #else
AndyA 22:0dd9c1b5664a 1101 int ret = 0, len;
AndyA 22:0dd9c1b5664a 1102 struct wordlist *addrs;
AndyA 22:0dd9c1b5664a 1103 char secbuf[MAXWORDLEN];
AndyA 22:0dd9c1b5664a 1104
AndyA 22:0dd9c1b5664a 1105 addrs = NULL;
AndyA 22:0dd9c1b5664a 1106 secbuf[0] = 0;
AndyA 22:0dd9c1b5664a 1107
AndyA 22:0dd9c1b5664a 1108 /* XXX Find secret. */
AndyA 22:0dd9c1b5664a 1109 if (ret < 0) {
AndyA 22:0dd9c1b5664a 1110 return 0;
AndyA 22:0dd9c1b5664a 1111 }
AndyA 22:0dd9c1b5664a 1112
AndyA 22:0dd9c1b5664a 1113 if (save_addrs) {
AndyA 22:0dd9c1b5664a 1114 set_allowed_addrs(unit, addrs);
AndyA 22:0dd9c1b5664a 1115 }
AndyA 22:0dd9c1b5664a 1116
AndyA 22:0dd9c1b5664a 1117 len = strlen(secbuf);
AndyA 22:0dd9c1b5664a 1118 if (len > MAXSECRETLEN) {
AndyA 22:0dd9c1b5664a 1119 AUTHDEBUG(LOG_ERR, ("Secret for %s on %s is too long\n", client, server));
AndyA 22:0dd9c1b5664a 1120 len = MAXSECRETLEN;
AndyA 22:0dd9c1b5664a 1121 }
AndyA 22:0dd9c1b5664a 1122
AndyA 22:0dd9c1b5664a 1123 BCOPY(secbuf, secret, len);
AndyA 22:0dd9c1b5664a 1124 BZERO(secbuf, sizeof(secbuf));
AndyA 22:0dd9c1b5664a 1125 *secret_len = len;
AndyA 22:0dd9c1b5664a 1126
AndyA 22:0dd9c1b5664a 1127 return 1;
AndyA 22:0dd9c1b5664a 1128 #endif
AndyA 22:0dd9c1b5664a 1129 }
AndyA 22:0dd9c1b5664a 1130 #endif /* CHAP_SUPPORT */
AndyA 22:0dd9c1b5664a 1131
AndyA 22:0dd9c1b5664a 1132
AndyA 22:0dd9c1b5664a 1133 #if 0 /* PAP_SUPPORT || CHAP_SUPPORT */
AndyA 22:0dd9c1b5664a 1134 /*
AndyA 22:0dd9c1b5664a 1135 * set_allowed_addrs() - set the list of allowed addresses.
AndyA 22:0dd9c1b5664a 1136 */
AndyA 22:0dd9c1b5664a 1137 static void
AndyA 22:0dd9c1b5664a 1138 set_allowed_addrs(int unit, struct wordlist *addrs)
AndyA 22:0dd9c1b5664a 1139 {
AndyA 22:0dd9c1b5664a 1140 if (addresses[unit] != NULL) {
AndyA 22:0dd9c1b5664a 1141 free_wordlist(addresses[unit]);
AndyA 22:0dd9c1b5664a 1142 }
AndyA 22:0dd9c1b5664a 1143 addresses[unit] = addrs;
AndyA 22:0dd9c1b5664a 1144
AndyA 22:0dd9c1b5664a 1145 #if 0
AndyA 22:0dd9c1b5664a 1146 /*
AndyA 22:0dd9c1b5664a 1147 * If there's only one authorized address we might as well
AndyA 22:0dd9c1b5664a 1148 * ask our peer for that one right away
AndyA 22:0dd9c1b5664a 1149 */
AndyA 22:0dd9c1b5664a 1150 if (addrs != NULL && addrs->next == NULL) {
AndyA 22:0dd9c1b5664a 1151 char *p = addrs->word;
AndyA 22:0dd9c1b5664a 1152 struct ipcp_options *wo = &ipcp_wantoptions[unit];
AndyA 22:0dd9c1b5664a 1153 u32_t a;
AndyA 22:0dd9c1b5664a 1154 struct hostent *hp;
AndyA 22:0dd9c1b5664a 1155
AndyA 22:0dd9c1b5664a 1156 if (wo->hisaddr == 0 && *p != '!' && *p != '-' && strchr(p, '/') == NULL) {
AndyA 22:0dd9c1b5664a 1157 hp = gethostbyname(p);
AndyA 22:0dd9c1b5664a 1158 if (hp != NULL && hp->h_addrtype == AF_INET) {
AndyA 22:0dd9c1b5664a 1159 a = *(u32_t *)hp->h_addr;
AndyA 22:0dd9c1b5664a 1160 } else {
AndyA 22:0dd9c1b5664a 1161 a = inet_addr(p);
AndyA 22:0dd9c1b5664a 1162 }
AndyA 22:0dd9c1b5664a 1163 if (a != (u32_t) -1) {
AndyA 22:0dd9c1b5664a 1164 wo->hisaddr = a;
AndyA 22:0dd9c1b5664a 1165 }
AndyA 22:0dd9c1b5664a 1166 }
AndyA 22:0dd9c1b5664a 1167 }
AndyA 22:0dd9c1b5664a 1168 #endif
AndyA 22:0dd9c1b5664a 1169 }
AndyA 22:0dd9c1b5664a 1170 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
AndyA 22:0dd9c1b5664a 1171
AndyA 22:0dd9c1b5664a 1172 /*
AndyA 22:0dd9c1b5664a 1173 * auth_ip_addr - check whether the peer is authorized to use
AndyA 22:0dd9c1b5664a 1174 * a given IP address. Returns 1 if authorized, 0 otherwise.
AndyA 22:0dd9c1b5664a 1175 */
AndyA 22:0dd9c1b5664a 1176 int
AndyA 22:0dd9c1b5664a 1177 auth_ip_addr(int unit, u32_t addr)
AndyA 22:0dd9c1b5664a 1178 {
AndyA 22:0dd9c1b5664a 1179 return ip_addr_check(addr, addresses[unit]);
AndyA 22:0dd9c1b5664a 1180 }
AndyA 22:0dd9c1b5664a 1181
AndyA 22:0dd9c1b5664a 1182 static int /* @todo: integrate this funtion into auth_ip_addr()*/
AndyA 22:0dd9c1b5664a 1183 ip_addr_check(u32_t addr, struct wordlist *addrs)
AndyA 22:0dd9c1b5664a 1184 {
AndyA 22:0dd9c1b5664a 1185 /* don't allow loopback or multicast address */
AndyA 22:0dd9c1b5664a 1186 if (bad_ip_adrs(addr)) {
AndyA 22:0dd9c1b5664a 1187 return 0;
AndyA 22:0dd9c1b5664a 1188 }
AndyA 22:0dd9c1b5664a 1189
AndyA 22:0dd9c1b5664a 1190 if (addrs == NULL) {
AndyA 22:0dd9c1b5664a 1191 return !ppp_settings.auth_required; /* no addresses authorized */
AndyA 22:0dd9c1b5664a 1192 }
AndyA 22:0dd9c1b5664a 1193
AndyA 22:0dd9c1b5664a 1194 /* XXX All other addresses allowed. */
AndyA 22:0dd9c1b5664a 1195 return 1;
AndyA 22:0dd9c1b5664a 1196 }
AndyA 22:0dd9c1b5664a 1197
AndyA 22:0dd9c1b5664a 1198 /*
AndyA 22:0dd9c1b5664a 1199 * bad_ip_adrs - return 1 if the IP address is one we don't want
AndyA 22:0dd9c1b5664a 1200 * to use, such as an address in the loopback net or a multicast address.
AndyA 22:0dd9c1b5664a 1201 * addr is in network byte order.
AndyA 22:0dd9c1b5664a 1202 */
AndyA 22:0dd9c1b5664a 1203 int
AndyA 22:0dd9c1b5664a 1204 bad_ip_adrs(u32_t addr)
AndyA 22:0dd9c1b5664a 1205 {
AndyA 22:0dd9c1b5664a 1206 addr = ntohl(addr);
AndyA 22:0dd9c1b5664a 1207 return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET
AndyA 22:0dd9c1b5664a 1208 || IN_MULTICAST(addr) || IN_BADCLASS(addr);
AndyA 22:0dd9c1b5664a 1209 }
AndyA 22:0dd9c1b5664a 1210
AndyA 22:0dd9c1b5664a 1211 #if 0 /* UNUSED */ /* PAP_SUPPORT || CHAP_SUPPORT */
AndyA 22:0dd9c1b5664a 1212 /*
AndyA 22:0dd9c1b5664a 1213 * some_ip_ok - check a wordlist to see if it authorizes any
AndyA 22:0dd9c1b5664a 1214 * IP address(es).
AndyA 22:0dd9c1b5664a 1215 */
AndyA 22:0dd9c1b5664a 1216 static int
AndyA 22:0dd9c1b5664a 1217 some_ip_ok(struct wordlist *addrs)
AndyA 22:0dd9c1b5664a 1218 {
AndyA 22:0dd9c1b5664a 1219 for (; addrs != 0; addrs = addrs->next) {
AndyA 22:0dd9c1b5664a 1220 if (addrs->word[0] == '-')
AndyA 22:0dd9c1b5664a 1221 break;
AndyA 22:0dd9c1b5664a 1222 if (addrs->word[0] != '!')
AndyA 22:0dd9c1b5664a 1223 return 1; /* some IP address is allowed */
AndyA 22:0dd9c1b5664a 1224 }
AndyA 22:0dd9c1b5664a 1225 return 0;
AndyA 22:0dd9c1b5664a 1226 }
AndyA 22:0dd9c1b5664a 1227
AndyA 22:0dd9c1b5664a 1228 /*
AndyA 22:0dd9c1b5664a 1229 * check_access - complain if a secret file has too-liberal permissions.
AndyA 22:0dd9c1b5664a 1230 */
AndyA 22:0dd9c1b5664a 1231 static void
AndyA 22:0dd9c1b5664a 1232 check_access(FILE *f, char *filename)
AndyA 22:0dd9c1b5664a 1233 {
AndyA 22:0dd9c1b5664a 1234 struct stat sbuf;
AndyA 22:0dd9c1b5664a 1235
AndyA 22:0dd9c1b5664a 1236 if (fstat(fileno(f), &sbuf) < 0) {
AndyA 22:0dd9c1b5664a 1237 warn("cannot stat secret file %s: %m", filename);
AndyA 22:0dd9c1b5664a 1238 } else if ((sbuf.st_mode & (S_IRWXG | S_IRWXO)) != 0) {
AndyA 22:0dd9c1b5664a 1239 warn("Warning - secret file %s has world and/or group access",
AndyA 22:0dd9c1b5664a 1240 filename);
AndyA 22:0dd9c1b5664a 1241 }
AndyA 22:0dd9c1b5664a 1242 }
AndyA 22:0dd9c1b5664a 1243
AndyA 22:0dd9c1b5664a 1244
AndyA 22:0dd9c1b5664a 1245 /*
AndyA 22:0dd9c1b5664a 1246 * scan_authfile - Scan an authorization file for a secret suitable
AndyA 22:0dd9c1b5664a 1247 * for authenticating `client' on `server'. The return value is -1
AndyA 22:0dd9c1b5664a 1248 * if no secret is found, otherwise >= 0. The return value has
AndyA 22:0dd9c1b5664a 1249 * NONWILD_CLIENT set if the secret didn't have "*" for the client, and
AndyA 22:0dd9c1b5664a 1250 * NONWILD_SERVER set if the secret didn't have "*" for the server.
AndyA 22:0dd9c1b5664a 1251 * Any following words on the line up to a "--" (i.e. address authorization
AndyA 22:0dd9c1b5664a 1252 * info) are placed in a wordlist and returned in *addrs. Any
AndyA 22:0dd9c1b5664a 1253 * following words (extra options) are placed in a wordlist and
AndyA 22:0dd9c1b5664a 1254 * returned in *opts.
AndyA 22:0dd9c1b5664a 1255 * We assume secret is NULL or points to MAXWORDLEN bytes of space.
AndyA 22:0dd9c1b5664a 1256 */
AndyA 22:0dd9c1b5664a 1257 static int
AndyA 22:0dd9c1b5664a 1258 scan_authfile(FILE *f, char *client, char *server, char *secret, struct wordlist **addrs, struct wordlist **opts, char *filename)
AndyA 22:0dd9c1b5664a 1259 {
AndyA 22:0dd9c1b5664a 1260 /* We do not (currently) need this in lwip */
AndyA 22:0dd9c1b5664a 1261 return 0; /* dummy */
AndyA 22:0dd9c1b5664a 1262 }
AndyA 22:0dd9c1b5664a 1263 /*
AndyA 22:0dd9c1b5664a 1264 * free_wordlist - release memory allocated for a wordlist.
AndyA 22:0dd9c1b5664a 1265 */
AndyA 22:0dd9c1b5664a 1266 static void
AndyA 22:0dd9c1b5664a 1267 free_wordlist(struct wordlist *wp)
AndyA 22:0dd9c1b5664a 1268 {
AndyA 22:0dd9c1b5664a 1269 struct wordlist *next;
AndyA 22:0dd9c1b5664a 1270
AndyA 22:0dd9c1b5664a 1271 while (wp != NULL) {
AndyA 22:0dd9c1b5664a 1272 next = wp->next;
AndyA 22:0dd9c1b5664a 1273 free(wp);
AndyA 22:0dd9c1b5664a 1274 wp = next;
AndyA 22:0dd9c1b5664a 1275 }
AndyA 22:0dd9c1b5664a 1276 }
AndyA 22:0dd9c1b5664a 1277
AndyA 22:0dd9c1b5664a 1278 /*
AndyA 22:0dd9c1b5664a 1279 * auth_script_done - called when the auth-up or auth-down script
AndyA 22:0dd9c1b5664a 1280 * has finished.
AndyA 22:0dd9c1b5664a 1281 */
AndyA 22:0dd9c1b5664a 1282 static void
AndyA 22:0dd9c1b5664a 1283 auth_script_done(void *arg)
AndyA 22:0dd9c1b5664a 1284 {
AndyA 22:0dd9c1b5664a 1285 auth_script_pid = 0;
AndyA 22:0dd9c1b5664a 1286 switch (auth_script_state) {
AndyA 22:0dd9c1b5664a 1287 case s_up:
AndyA 22:0dd9c1b5664a 1288 if (auth_state == s_down) {
AndyA 22:0dd9c1b5664a 1289 auth_script_state = s_down;
AndyA 22:0dd9c1b5664a 1290 auth_script(_PATH_AUTHDOWN);
AndyA 22:0dd9c1b5664a 1291 }
AndyA 22:0dd9c1b5664a 1292 break;
AndyA 22:0dd9c1b5664a 1293 case s_down:
AndyA 22:0dd9c1b5664a 1294 if (auth_state == s_up) {
AndyA 22:0dd9c1b5664a 1295 auth_script_state = s_up;
AndyA 22:0dd9c1b5664a 1296 auth_script(_PATH_AUTHUP);
AndyA 22:0dd9c1b5664a 1297 }
AndyA 22:0dd9c1b5664a 1298 break;
AndyA 22:0dd9c1b5664a 1299 }
AndyA 22:0dd9c1b5664a 1300 }
AndyA 22:0dd9c1b5664a 1301
AndyA 22:0dd9c1b5664a 1302 /*
AndyA 22:0dd9c1b5664a 1303 * auth_script - execute a script with arguments
AndyA 22:0dd9c1b5664a 1304 * interface-name peer-name real-user tty speed
AndyA 22:0dd9c1b5664a 1305 */
AndyA 22:0dd9c1b5664a 1306 static void
AndyA 22:0dd9c1b5664a 1307 auth_script(char *script)
AndyA 22:0dd9c1b5664a 1308 {
AndyA 22:0dd9c1b5664a 1309 char strspeed[32];
AndyA 22:0dd9c1b5664a 1310 struct passwd *pw;
AndyA 22:0dd9c1b5664a 1311 char struid[32];
AndyA 22:0dd9c1b5664a 1312 char *user_name;
AndyA 22:0dd9c1b5664a 1313 char *argv[8];
AndyA 22:0dd9c1b5664a 1314
AndyA 22:0dd9c1b5664a 1315 if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL)
AndyA 22:0dd9c1b5664a 1316 user_name = pw->pw_name;
AndyA 22:0dd9c1b5664a 1317 else {
AndyA 22:0dd9c1b5664a 1318 slprintf(struid, sizeof(struid), "%d", getuid());
AndyA 22:0dd9c1b5664a 1319 user_name = struid;
AndyA 22:0dd9c1b5664a 1320 }
AndyA 22:0dd9c1b5664a 1321 slprintf(strspeed, sizeof(strspeed), "%d", baud_rate);
AndyA 22:0dd9c1b5664a 1322
AndyA 22:0dd9c1b5664a 1323 argv[0] = script;
AndyA 22:0dd9c1b5664a 1324 argv[1] = ifname;
AndyA 22:0dd9c1b5664a 1325 argv[2] = peer_authname;
AndyA 22:0dd9c1b5664a 1326 argv[3] = user_name;
AndyA 22:0dd9c1b5664a 1327 argv[4] = devnam;
AndyA 22:0dd9c1b5664a 1328 argv[5] = strspeed;
AndyA 22:0dd9c1b5664a 1329 argv[6] = NULL;
AndyA 22:0dd9c1b5664a 1330
AndyA 22:0dd9c1b5664a 1331 auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL);
AndyA 22:0dd9c1b5664a 1332 }
AndyA 22:0dd9c1b5664a 1333 #endif /* 0 */ /* PAP_SUPPORT || CHAP_SUPPORT */
AndyA 22:0dd9c1b5664a 1334 #endif /* PPP_SUPPORT */